And I say to our European partners, frustrated as some of them no doubt are by Britain’s attitude: work with us on this.
Consider the extraordinary steps which the Eurozone members are taking to keep the Euro together, steps which a year ago would have seemed impossible.
It does not seem to me that the steps which would be needed to make Britain – and others – more comfortable in their relationship in the European Union are inherently so outlandish or unreasonable.

There's no reason at all why the EU's progress in creating special integrating institutions for the Eurozone means an increased willingness to create a special a non-integrating zone for the UK, especially when it already has the mother of all opt-outs in not being obligated to join the Euro.